diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 42b4eac99a..a7f40e3fe3 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -64,6 +64,7 @@ public:
 
         vSeeds.push_back(CDNSSeedData("darkcoin.io", "dnsseed.darkcoin.io"));
         vSeeds.push_back(CDNSSeedData("darkcoin.qa", "dnsseed.darkcoin.qa"));
+        vSeeds.push_back(CDNSSeedData("masternode.io", "dnsseed.masternode.io"));
 
         base58Prefixes[PUBKEY_ADDRESS] = list_of(76); // Darkcoin addresses start with X
         base58Prefixes[SCRIPT_ADDRESS] = list_of(5);
@@ -101,7 +102,7 @@ static CMainParams mainParams;
 
 
 //
-// Testnet (v4)
+// Testnet (v3)
 //
 class CTestNetParams : public CMainParams {
 public:
@@ -130,8 +131,9 @@ public:
         vSeeds.clear();
         vSeeds.push_back(CDNSSeedData("darkcoin.io", "testnet-seed.darkcoin.io"));
         vSeeds.push_back(CDNSSeedData("darkcoin.qa", "testnet-seed.darkcoin.qa"));
+        vSeeds.push_back(CDNSSeedData("masternode.io", "test.dnsseed.masternode.io"));
 
-        base58Prefixes[PUBKEY_ADDRESS] = list_of(111); // Testnet v4 addresses
+        base58Prefixes[PUBKEY_ADDRESS] = list_of(111); // Testnet v3 addresses
         base58Prefixes[SCRIPT_ADDRESS] = list_of(196);
         base58Prefixes[SECRET_KEY]     = list_of(239);
         base58Prefixes[EXT_PUBLIC_KEY] = list_of(0x04)(0x35)(0x87)(0xCF);
diff --git a/src/checkpoints.cpp b/src/checkpoints.cpp
index 735dbdf77b..923365df31 100644
--- a/src/checkpoints.cpp
+++ b/src/checkpoints.cpp
@@ -68,8 +68,8 @@ namespace Checkpoints
     static const CCheckpointData dataTestnet = {
         &mapCheckpointsTestnet,
         1405699509,
-        20,
-        300
+        201,
+        500
     };
 
     static MapCheckpoints mapCheckpointsRegtest =
diff --git a/src/main.cpp b/src/main.cpp
index 7f668f4a09..df866698f1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2297,7 +2297,6 @@ bool ConnectBlock(CBlock& block, CValidationState& state, CBlockIndex* pindex, C
         view.SetBestBlock(pindex->GetBlockHash());
         return true;
     }
-
     bool fScriptChecks = pindex->nHeight >= Checkpoints::GetTotalBlocksEstimate();
 
     // Do not allow blocks that contain transactions which 'overwrite' older transactions,
@@ -2874,7 +2873,7 @@ bool CheckBlock(const CBlock& block, CValidationState& state, bool fCheckPOW, bo
 
     bool MasternodePayments = false;
 
-    if(Params().NetworkID() == CChainParams::TESTNET){
+    if(TestNet()){
         if(block.nTime > START_MASTERNODE_PAYMENTS_TESTNET) MasternodePayments = true;
     } else {
         if(block.nTime > START_MASTERNODE_PAYMENTS) MasternodePayments = true;
@@ -2919,7 +2918,7 @@ bool CheckBlock(const CBlock& block, CValidationState& state, bool fCheckPOW, bo
                         CBitcoinAddress address2(address1);
 
                         LogPrintf("CheckBlock() : Couldn't find masternode payment(%d|%d) or payee(%d|%s) nHeight %d. \n", foundPaymentAmount, masternodePaymentAmount, foundPayee, address2.ToString().c_str(), chainActive.Tip()->nHeight+1);
-                        if(!TestNet()) return state.DoS(100, error("CheckBlock() : Couldn't find masternode payment or payee"));
+                        if(!TestNet() && !RegTest()) return state.DoS(100, error("CheckBlock() : Couldn't find masternode payment or payee"));
                     }
                 }
             } else {
diff --git a/src/qt/clientmodel.h b/src/qt/clientmodel.h
index 0fd35fa2aa..dd077d9be2 100644
--- a/src/qt/clientmodel.h
+++ b/src/qt/clientmodel.h
@@ -55,7 +55,7 @@ public:
     double getVerificationProgress() const;
     QDateTime getLastBlockDate() const;
 
-    //! Return network (main, testnet4, regtest)
+    //! Return network (main, testnet3, regtest)
     QString getNetworkName() const;
     //! Return true if core is doing initial block download
     bool inInitialBlockDownload() const;
diff --git a/src/rpcblockchain.cpp b/src/rpcblockchain.cpp
index c4e2b218b5..0038da6ad6 100644
--- a/src/rpcblockchain.cpp
+++ b/src/rpcblockchain.cpp
@@ -441,7 +441,7 @@ Value getblockchaininfo(const Array& params, bool fHelp)
             "Returns an object containing various state info regarding block chain processing.\n"
             "\nResult:\n"
             "{\n"
-            "  \"chain\": \"xxxx\",        (string) current chain (main, testnet4, regtest)\n"
+            "  \"chain\": \"xxxx\",        (string) current chain (main, testnet3, regtest)\n"
             "  \"blocks\": xxxxxx,         (numeric) the current number of blocks processed in the server\n"
             "  \"bestblockhash\": \"...\", (string) the hash of the currently best block\n"
             "  \"difficulty\": xxxxxx,     (numeric) the current difficulty\n"